JPS56138319A - Preset device for channel selection number - Google Patents

Preset device for channel selection number

Info

Publication number
JPS56138319A
JPS56138319A JP4147580A JP4147580A JPS56138319A JP S56138319 A JPS56138319 A JP S56138319A JP 4147580 A JP4147580 A JP 4147580A JP 4147580 A JP4147580 A JP 4147580A JP S56138319 A JPS56138319 A JP S56138319A
Authority
JP
Japan
Prior art keywords
channel selection
channel
contacts
electrode
code plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4147580A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP4147580A priority Critical patent/JPS56138319A/en
Priority to US06/246,361 priority patent/US4411498A/en
Priority to DE19813112828 priority patent/DE3112828A1/en
Publication of JPS56138319A publication Critical patent/JPS56138319A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only

Abstract

PURPOSE: To enable to preset the channel selection number with a simple operation, by preparing the code plate in which desired channel number is mechanically engraved with BCD codes or the like, and supplying the engraved channel number to the channel selection circuit with the operation of the channel selection button.
CONSTITUTION: The electrode 10 corresponding to the channel number represented in BCD code is located to the printed board 10 of the channel selection code plate 1, this code plate 1 is made possible for being inserted to the socket 2 so that the channel number consisting of the electrode 10 can be read with the socket 2 via the contacts S1∼S4 and S11∼S14. Further, the power supply voltage from the channel selection button switch SW is connected to the power supply electrode P of the board 10 via the contacts S5, S15 to connect the contacts S1∼S4 and S11∼S14 to the channel selection circuit 20 via diodes D1∼D4 and D11∼D14. Further, the channel selection number can be preset to the circuit 20 with the operation of the button switch SW.
COPYRIGHT: (C)1981,JPO&Japio
JP4147580A 1980-03-31 1980-03-31 Preset device for channel selection number Pending JPS56138319A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4147580A JPS56138319A (en) 1980-03-31 1980-03-31 Preset device for channel selection number
US06/246,361 US4411498A (en) 1980-03-31 1981-03-23 Zoom lens barrel
DE19813112828 DE3112828A1 (en) 1980-03-31 1981-03-31 "ZOOM LENS"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4147580A JPS56138319A (en) 1980-03-31 1980-03-31 Preset device for channel selection number

Publications (1)

Publication Number Publication Date
JPS56138319A true JPS56138319A (en) 1981-10-28

Family

ID=12609379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4147580A Pending JPS56138319A (en) 1980-03-31 1980-03-31 Preset device for channel selection number

Country Status (3)

Country Link
US (1) US4411498A (en)
JP (1) JPS56138319A (en)
DE (1) DE3112828A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0531606Y2 (en) * 1986-10-29 1993-08-13
DE3943674C2 (en) * 1988-06-01 1997-02-20 Asahi Optical Co Ltd Cam mechanism in zoom lens
JP2524455Y2 (en) * 1988-06-01 1997-01-29 旭光学工業株式会社 Zoom lens cam structure
DE4323721C2 (en) * 1993-07-15 1996-03-21 Leica Mikroskopie & Syst Microscope lens with a correction frame
US5812325A (en) * 1996-01-26 1998-09-22 Asahi Kogaku Kogyo Kabushiki Kaisha Telescoping-type of zoom lens
GB2309545B (en) * 1996-01-26 2000-10-18 Asahi Optical Co Ltd Telescoping-type of zoom lens
DE19804470C1 (en) * 1998-02-05 1999-08-26 Leica Microsystems Microscope objective with correction mounting
TW352841U (en) * 1998-09-04 1999-02-11 Wan Neng Optical Industry Co Ltd Lens apparatus for digital camera with stageless focus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452902A (en) * 1977-10-05 1979-04-25 Toshiba Corp Preset device for receiver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429888B2 (en) * 1971-12-31 1979-09-27
US3765748A (en) * 1972-09-01 1973-10-16 H Mito Mechanism for relative adjustment of axially spaced lens components
JPS5140858Y2 (en) * 1973-02-05 1976-10-05
JPS5614485Y2 (en) * 1975-11-07 1981-04-06
JPS5634881Y2 (en) * 1976-03-18 1981-08-17
JPS5569111A (en) * 1978-11-17 1980-05-24 Minolta Camera Co Ltd Single operation ring type zoom lens barrel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452902A (en) * 1977-10-05 1979-04-25 Toshiba Corp Preset device for receiver

Also Published As

Publication number Publication date
US4411498A (en) 1983-10-25
DE3112828A1 (en) 1981-12-24

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